果仁贝提取物和单氨酸对体外转体发酵,甲生产和转体细菌群体的影响
E Sarmikasoglou1, P Sumadong2, L F W Roesch3
1Department of Animal Sciences, University of Florida, Gainesville, FL 32611.
Journal of dairy science
|September 20, 2023
概括
果仁贝提取物 (CNSE) 有效地降低了乳牛的甲 (CH4) 产量,相比于monensin. 这项研究强调了CNSE作为一种潜在的料添加剂,用于减轻反动物的CH4排放.
科学领域:
- 动物的营养和新陈代谢
- 环境科学和动物农业
- 动物系统中的微生物生态学
背景情况:
- 在反动物中产生甲 (CH4) 是温室气体排放的重要贡献者.
- 料添加剂正在探索以减轻CH4排放,其中素是常见的离子体.
- 果仁贝提取物 (CNSE) 已经显示出潜在的抗菌性质,与功能相关.
研究的目的:
- 为了评估果仁贝提取物 (CNSE) 和素对体外食发酵的影响.
- 评估CNSE和单素对CH4产生的影响以及反动物细菌群落结构.
- 为了比较CNSE在不同剂量的疗效与因素对甲缓解.
主要方法:
- 在体外化食原料含量与控制 (CON),单宁素 (MON) 和两剂CNSE (CNSE100,CNSE200).
- 发酵参数的分析,包括pH值,挥发性脂肪酸,乳酸和气体生产.
- 使用PERMANOVA.确定CH4产量,体外干物质可降解性 (IVDMD) 和反动物细菌群体组成.
主要成果:
- 与单酶相比,CNSE治疗显著减少了10.64%的总CH4产量.
- 与CNSE200相比,在CNSE100剂量下观察到更低的酸盐和更高的酸盐的CNSE改变了反发酵.
- 细菌群体分析显示了关键属的相对丰度的变化,包括Prevotella的减少和Butyrivibrio的增加,与对照群相比,在治疗中变化.
结论:
- 果仁贝提取物显示出在反动物食中作为甲减轻添加剂的潜力.
- 在体外条件下,CNSE比单酶更有效地降低了CH4的产生.
- 需要进一步的体内研究来证实乳牛中CNSE的疗效和最佳剂量.
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